Acta Societatis pro Fauna et Flora Fennica, 49, N:o 2. 261 



2°. Sporae majores, long. O.025 — O.037 mm. 



8. D. antecellens (Nyl.) Vain. Paraphyses parcae. 207. 



10. Cercidospora Koerb. 



Parasitae lichenum, gonidiis destitutae. Paraphyses 

 bene evolutae. Sporae subfusiformes, 1-septatae. 212. 



1. C. epipolytropa (Mudd) Arn. Perithecium subaeruginosum 

 aut olivaceum fuscescensve, basi albidum. 212. 



Subtrib. 12. Hyalomonomeres Vain. 



Thallus gonidia continens aut gonidiis destitutus. 

 Paraphyses evolutae. Sporae decolores, oblongae ellipsoi- 

 deaeve aut subovoideae, simplices. 213. 



1. Thrombium. Thallus crustaceus, gonidia continens. 214 



(261). 



2. Sporophysa. Parasitae lichenum. 216 (261). 



1. Thrombium (Wallr.) Th. Fr. 



Thallus crustaceus, gonidia pleurococcoidea continens. 

 1. Th. epigaeum (Pers.) Wallr. Perithecium obscuratum, in- 

 tegrum. 214. 



2. Sporophysa (Sacc.) Vain. 



Parasitae lichenum, gonidiis destitutae. 216. 



1. Sp. aspiciliae Vain. Perithecium obscuratum, integrum. 216. 



Trib. 2. Microthyrieae (Sacc.) Vain. 



Perithecium ex hyphis radiantibus, septatis, in strato 

 simplice dispositis, formatum, haud immersum, vertice irre- 

 gulariter pertuso. Thallus crustaceus, gonidia continens aut 

 e mycelio gonidiis destituto constans. 216. 



1. Rhaphidicyrtis. Thallus gonidia continens. 216 (261). 



2. Micropeltopsis. Parasitae lichenum, gonidiis destitutae. 218 

 (262). 



1. Rhaphidicyrtis Vain. 



Gonidia ad Trentepohliam pertinentia. Sporae acicu- 

 lares aut filiformes, transversim pluri-septatae, decolores. 



